Ulfilas
[5] Ulfila served as a bishop and missionary, participated in the Arian controversy, and is credited with converting the Goths to Christianity[6] as well as overseeing translation of the Bible into the Gothic language.The dominant and most important account of Ulfila's life comes from a 4th century letter from his pupil, Auxentius of Durostorum, who wrote it immediately after his death.[11] A summary by Photios I of Philostorgius' Ecclesiastical History is also significant, but references to Ulfila's life are generally scarce, and he was omitted from Jerome's De Viris Illustribus.According to Philostorgius, he was sent by the Goths during the reign of Constantine I as an ambassador to the Roman Empire, where he was consecrated as the bishop of Gothia by the Arian Eusebius of Nicomedia.[22][e] The Romans saw Ulfila as pontifex ipseque primas (bishop and tribal leader); Constantius II supposedly described him as the era's Moses and he was additionally compared to the prophet Elijah.[26] In 341, he returned to Gothia, spending the following seven years working to explain and confirm the doctrine of Arianism among existing adherents and the unconverted.[30] He seemed to have remained the temporal and spiritual leader of the Christian Goths in Nicopolis, possibly exerting influence beyond the Roman frontier into Gothia as well.In 380, Theodosius I issued a law against heresy, supported the First Council of Nicaea, and deposed the Arian Demophilus of Constantinople in favor of orthodoxy.